ADDISON JET MANAGEMENT INC

30 MINUTES BEFORE LANDING, DETECTED AN ELECTRICAL BURNING ODOR THROUGHT ENTIRE CABIN. TURNED OFF PC POWER SYS IMMEDIATELY AND ODOR SLOWLY WENT AWAY. F/A COULD NOT PINPOINT WHERE THE ODOR WAS COMING FROM. AFTER TURNING PC POWER OFF, GEN 1, 3, 2, AND 4 LOADS WERE 65, 75, 95, AND 90 RESPECTIVELY. ACFT LANDED SAFETLY. MX PERFORMED TROUBLESHOOTING IAW FIM 21-20-00-810-801-A, BLOCK 1-6, 8-10, NO FAULTS FOUND. MX PERFORMED OPS TEST OF PASSENGER PC POWER STATIC INVERTER COOLING FAN IAW AMM 24-20-03-700-802-A. OPS CHECKED GOOD, NO DEFECTS NOTED. COULD NOT DUPLICATE.

ON DESCENT AT 14,000FT, HYD 2 QTY LOW MESSAGE APPEARED, THEN FOLLOWED SHORTLY BY ENG 2 HYD PUMP FAIL MESSAGE. THE CREW DIVERTED DUE TO RUNWAY REQUIREMENT AND LANDED SAFELY. DURING VISUAL INSPECTION, PN 145-31063-409 HOSE FROM NR 2 ENGINE DRIVEN HYDRAULIC PUMP WAS FOUND TO BE WORN THROUGH DUE TO CHAFING. REPLACED THE HOSE WITH INTERCHANGEABLE, PN A9140-409. OPS CHECK AND LEAK CHECK GOOD.

NR 1 ENGINE ANTI-ICE PRESSURE TRANSDUCER TUBE FOUND BROKEN AT TRANSDUCER AND ENGINE AIR INTAKE ANTI-ICE DUCT. R & R WITH NEW. OPS CHECKED GOOD.

GEN 3 OFF BUS ON TAXI IN AFTER SHUTDOWN OF NR 2 ENGINE. SMELL OF SMOKE IN THE COCKPIT. PERFORMED FIM 21-20-00-810-801-A FOR SMELL OF SMOKE IN THE CABIN COCKPIT. NO ABNORMAL SMELL NOTED AT THIS TIME. AC RELEASED IAW MEL 24-31-01-2 CTRL # 768504B09. PLACARDS INSTALLED CW SP 24-31-01-2. PULLED C/B'S D8 & D9.

2ND EMERGENCY FLOOR PROXIMITY STRIP LIGHT INOP, CONNECTOR WIRES BROKEN AT BASE. REMOVED DEFECTIVE UNIT AND INSTALLED SERVICEABLE (NEW) 2ND EMERGENCY FLOOR POXIMITY STRIP LIGHT IAW EMB135 AMM TASK 33-50-12-000/400-801-A. OPS CHECK GOOD, NO FURTHER DEFECTS NOTED.

3RD EMERGENCY FLOOR PROXIMITY STRIP LIGHT INOP, CONNECTOR WIRES BROKEN AT BASE. REMOVED DEFECTIVE UNIT AND INSTALLED SERVICEABLE (NEW) 3RD EMERGENCY FLOOR PROXIMITY STRIP LIGHT IAW EMB135 AMM TASK 33-50-12-000/400-801-A. OPS CHECK GOOD, NO FURTHER DEFECTS NOTED.

ON TAKEOFF ROLL "E1 FUEL IMPENDING BYPASS" MESSAGE WAS DISPLAYED ON EICAS. THE CREW ABORTED THE TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE PERFORMED THE PROCEDURES PER THE EMB135 AMM AND REPLACED THE FILTER ELEMENT. NO VISUAL CONTAMINATION WAS FOUND IN THE FILTER ELEMENT.

AFTER TAKEOFF AT APPROX 400 FT, PILOTS RECEIVED "LAV SMOKE" EICAS INDICATION. DECLARED EMERGENCY & RETURNED FOR LANDING AT DEPARTURE. ACFT GROUNDED UNTIL MX DETERMINES ROOT CAUSE. F/A INVESTIGATED ACFT LAV - OBSERVING NO FUMES OR SMOKE. ONCE ON THE GROUND FIRE DEPARTMENT COMPLETED EXTERNAL INSPECTION " NO INDICATION OF SMOKE OR FUMES". AFTER ALL PASSENGERS DEPLANED, FIRE DEPARTMENT BOARD TO INVESTIGATE LAV "NO INDICATION OF SMOKE OR FUMES". ACFT WAS TAKEN OUT OF SERVICE FOR MX EVALUATION. RESIDUAL ENG CLEANER IN BLEED AIR SYS & ASSOCIATED COMPONENTS. MX CONDUCTED ENG CORE WASHES DURING WEEKEND.